ezpublish / documentation / faq / complex set ups - clustering / q: how is the database repl...
Caution: This documentation is for eZ Publish legacy, from version 3.x to 6.x.
For 5.x documentation covering Platform see eZ Documentation Center, for difference between legacy and Platform see 5.x Architecture overview.
A: eZ Publish has built in content replication between the front-end servers. This enables scaling of the cluster setup. The database back-end is scaled using standard replication (clustering/maser-slave) setup in the RDBMS enabling scaling of the back-end layer.